Apple’s Office-like apps are free on the premium end of the product spectrum, and Google’s Office-like apps are free on the low end of the product spectrum, and that leaves Microsoft in the middle asking for money for what can be obtained elsewhere for free.
If you’re under a Microsoft enterprise agreement, or EA, Google will give you Google Apps for Work — free.
Of course, just like Apple’s Pages, Numbers, and Keynote are not Word, Excel, or PowerPoint, neither are Google’s Apps for Work equivalents to Office.
Competition from Google’s Chromebook and Android devices have forced Microsoft into giving Windows away to retain customers. I’m not sure how the math on that really works, though.